<template>
  <div class="upload">
    <div class="top">
      <el-upload
        class="avatar-uploader"
        action="https://www.fastmock.site/mock/98096f990c104ce8fc27771bf1dd7869/vue/upload"
        :show-file-list="false"
        :on-success="handleAvatarSuccess"
        :before-upload="beforeAvatarUpload"
      >
        <img v-if="imageUrl" :src="imageUrl" class="avatar" />
        <i v-else class="el-icon-plus avatar-uploader-icon"></i>
      </el-upload>
    </div>
    <h2>二</h2>
    <div>
      <el-upload
        class="upload-demo"
        action="https://www.fastmock.site/mock/98096f990c104ce8fc27771bf1dd7869/vue/upload"
        :on-preview="handlePreview"
        :on-remove="handleRemove"
        :file-list="fileList"
        list-type="picture"
      >
        <el-button size="small" type="primary">点击上传</el-button>
        <div slot="tip" class="el-upload__tip">
          只能上传jpg/png文件，且不超过500kb
        </div>
      </el-upload>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      imageUrl: "",
      fileList:[{ url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}]
    };
  },
  methods: {
    handleAvatarSuccess(res, file) {
      //图片上传成功
      console.log(file);
      this.imageUrl = URL.createObjectURL(file.raw);
      console.log(this.imageUrl);
    },
    beforeAvatarUpload(file) {
      //图片上传之前进行验证
      console.log(file);
      const isJPG = file.type === "image/jpeg";
      const isLt2M = file.size / 1024 / 1024 < 2;

      if (!isJPG) {
        this.$message.error("上传头像图片只能是 JPG 格式!");
      }
      if (!isLt2M) {
        this.$message.error("上传头像图片大小不能超过 2MB!");
      }
      return isJPG && isLt2M;
    },
    handleRemove(file, fileList) {
        console.log(file, fileList);
      },
      handlePreview(file) {
        console.log(file);
      }
  },
};
</script>

<style scoped lagn="less">
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
.upload {
  height: 100%;
  background: #fff;
}
</style>